add auth interceptors

interceptors/auth/options.go

@@ -0,0 +1,56 @@
+package auth
+
+import (
+	grpc_auth "github.com/grpc-ecosystem/go-grpc-middleware/auth"
+)
+
+type Option func(o *options)
+
+func WithMethods(methods ...string) Option {
+	return func(o *options) {
+		o.methods = append(o.methods, methods...)
+	}
+}
+
+func WithIgnoredMethods(methods ...string) Option {
+	return func(o *options) {
+		o.ignoredMethods = append(o.ignoredMethods, methods...)
+	}
+}
+
+func WithBasicValidators(validators ...BasicValidator) Option {
+	var authFns []grpc_auth.AuthFunc
+	for _, v := range validators {
+		authFns = append(authFns, makeBasicAuthFunc(v))
+	}
+	return func(o *options) {
+		o.authFns = append(o.authFns, authFns...)
+	}
+}
+
+func WithTokenValidators(validators ...TokenValidator) Option {
+	var authFns []grpc_auth.AuthFunc
+	for _, v := range validators {
+		authFns = append(authFns, makeTokenAuthFunc(v))
+	}
+	return func(o *options) {
+		o.authFns = append(o.authFns, authFns...)
+	}
+}
+
+func WithX509Validators(validators ...X509Validator) Option {
+	var authFns []grpc_auth.AuthFunc
+	for _, v := range validators {
+		authFns = append(authFns, makeX509AuthFunc(v))
+	}
+	return func(o *options) {
+		o.authFns = append(o.authFns, authFns...)
+	}
+}
+
+type options struct {
+	methods        []string
+	ignoredMethods []string
+
+	authFns []grpc_auth.AuthFunc
+}